The answer to 'how often to clean air duct' is that most experts recommend having your air ducts cleaned every 3-5 years. Regular duct cleaning helps maintain indoor air quality, improve HVAC system efficiency, and extend the lifespan of your heating and cooling equipment.
The frequency of air duct cleaning can vary depending on factors like the size of your home, number of occupants, presence of pets, and whether anyone in your household has allergies or respiratory issues. Homes with more occupants, pets, or allergy sufferers may need more frequent duct cleaning, such as every 2-3 years. Proper maintenance and timely duct cleaning can also help prevent buildup of dust, debris, and potentially harmful contaminants in your ductwork.